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Financial assets at fair value through other comprehensive income - Schedule of Financial Assets at Fair Value Through Other Comprehensive Income (Details) - Investments in equity instruments designated at fair value through other comprehensive income [member] - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Financial assets at fair value through other comprehensive income - Schedule of Financial Assets at Fair Value Through Other Comprehensive Income (Details) [Line Items]    
Opening balance ¥ 104,970 ¥ 129,060
Additions 127,946 0
Fair value changes (37,127) (24,090)
Closing balance ¥ 195,789 ¥ 104,970